Substrates
News
Coating Guide extended
The menu section Coating guide on top
became an extension. Our Coating specials
give you a brief overview of the specialities
LASEROPTIK is able to serve:
optimized coating designs and techniques,
substrate handling and coating fixtures.
Optimized thin film coatingswith IBS
This article (in german) by Dr. Wolfgang Ebert and Tobias Groß (published in "Laser+Photonik", Iss. 1, March 2010, p. 30-34) discusses and compares the different coating methods found at LASEROPTIK with focus on IBS process and its special possibilities.
| Photonics West 2010 booth 4601-24 January 26.-28. San Francisco, USA |  |
LASEROPTIK started an "open door" day on September 3.,2009. A lot of visitors came in to congratulate, celebrate and inform themselves about the capabilities of our production. A photo gallery of LO OPEN can be seen here or at menu item "About us > 25th anniversary".A short article (in german) describes the day and the celebrations at the "Laserhof" in Garbsen.
download PDF file
| 1984 - 2009 LASEROPTIK GmbH celebrates the 25 anniversary! |
Solid etalons
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Solid Etalons Uncoated Suprasil ® 311 plates, wedge < 0.2 arcsec Fabry-Perot etalons are extremely narrow line width filters with a series of sharp transmission peaks, separated by the free spectral range (FSR). FSR depends on the optical thickness of the etalons only, whereas the finesse (F) is determined not only by the reflectivity of the coatings, but mainly on surface quality, parallelism, homogeneity of the substrate material and defect free coatings. Solid etalons can be tuned by tilting and by temperature change. If a minimum resolvable resolution   is needed, the reflectivity finesse FR can be calculated with With the diagrams the reflectivity R of the layers can be determined.The final finesse of the etalon is limited in most cases by the flatness finesse FF (flatness of /20 gives FF = 20) for beam diameter 20 mm. With thinner beams FF can grow to > 200.Pairs of etalons in series may be used to obtain ultra high resolution combined with a very long FSR. The resulting finesse of such a combination can be one oder of magnitude higher. Besides lower costs solid etalons offer the following advantages over air spaced etalons for intra cavity use: • higher transmission • lower size harder coatings with • higher damage thresholds. |
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| Diameter | Thickness | Wedge / | Flatness | Surface | Suprasil 311 | FSR | FSR | ||
| Ř (mm) |
t |
Parallelism | λ (633nm) |
imperfection tolerances |
Article-No. | € | nm @ 633nm | GHz | |
| 25 | 0.1 | < 0.2" | λ/20 | 210 | 1.38 | 1000 | |||
| 25 | 0.2 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00185 | 200 | 0.69 | 500 | |
| 25 | 0.3 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00740 | 200 | 0.46 | 330 | |
| 25 | 0.5 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00353 | 190 | 0.28 | 200 | |
| 25 | 1 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-01001 | 180 | 0.14 | 100 | |
| 25 | 2 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00932 | 170 | 0.069 | 50 | |
| 25 | 3 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00933 | 170 | 0.046 | 33 | |
| 25 | 4 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00029 | 170 | 0.034 | 25 | |
| 25 | 5 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00206 | 180 | 0.028 | 20 | |
| 25 | 6.35 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00934 | 190 | 0.022 | 16 | |
| 25 | 10 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00754 | 200 | 0.014 | 10 | |
| 25 | 20 | < 0.2" | λ/20 | 5/3x0.040 | ET-S-00495 | 300 | 0.007 | 5 | |
| All components with an € price are available from stock. | |||||||||